CVE-2024-50109 md/raid10: fix null ptr dereference in raid10_size()

What is CVE-2024-50109?

CVE-2024-50109 is a medium-severity vulnerability in Linux kernel, published on 5 Nov 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In the Linux kernel, the following vulnerability has been resolved:

md/raid10: fix null ptr dereference in raid10_size()

In raid10_run() if raid10_set_queue_limits() succeed, the return value is set to zero, and if following procedures failed raid10_run() will return zero while mddev->private is still NULL, causing null ptr dereference in raid10_size().

Fix the problem by only overwrite the return value if raid10_set_queue_limits() failed.

Weakness: CWE-476

Which versions are affected by CVE-2024-50109?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-50109?

Apply the vendor's patch.

Is CVE-2024-50109 being exploited?

There is no known exploitation of CVE-2024-50109 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2024-50109, DEBIAN-CVE-2024-50109, GHSA-h7g6-mwmp-g4cj, UBUNTU-CVE-2024-50109.